1. Analyzing the Relationship Between Two Variables
Bivariate Analysis
Analyzing the Relationship Between Two Variables

2. Types of Bivariate Analysis
New Terms: Independent Variable; Dependent Variable
Remember your variable types: Nominal; Ordinal; Interval
To analyze the relationship between 2 variables, we will define several possibilities:
Nominal-Nominal or Ordinal
Nominal-Interval
Interval-Interval

3. Bivariate Analysis, for each combination
Nominal-Interval: Difference of means
Nominal-Nominal: Cross Tabulation
Interval-Interval: Correlation and Regression Analysis
Surprise! You’ve already been doing some of this…..and have seen these procedures in Simon.

4. More visuals: Difference of Means

5. More visuals: Cross Tabulation

6. Nominal-Interval Bivariate Analysis: Mean Difference
Does the average number of persons in a household differ by neighborhood?

7. Nominal-Nominal Bivariate Analysis: Cross Tabulation
Occupational Distributions by Ward, 1905:

8. Interval –Interval Bivariate Analysis: Regression and Correlation
Does the size a building determine it property value?

9. Interval –Interval Bivariate Analysis: Regression and Correlation
Does the size a building determine it property value?